<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>shadow</title>
	<style>
		body{
			background-color: blue;
		  }
		/* .box1{
			margin: 80px;
			width: 300px;
			height: 80px;
			text-align: center;
			line-height: 80px;
			border: 1px solid #eee;
			border-radius: 3px;
		}
		.box1:hover{
			box-shadow: 0 0 5px #0000cc;
		} */
		p{
			width:400px;
			height: 400px;
			background-color: white;
			margin: 200px;
			border-radius: 100%;
			box-shadow: 0px 0px 100px yellow,0px 0px 100px yellow,0px 0px 350px blueviolet;
		}
	</style>
	</head>
	<body>
		<!-- <div class="box1">阴影悬停效果
			<hover></hover>
		</div> -->
		<p></p>
	</body>
</html>